As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE INSPECTION OF PRE-COOLER ASSEMBLY FOUND INTERNAL VANES BROKEN OFF PRE-COOLER ASSEMBLY BLOCKING AIRFLOW OVER COOLING FINS. AFTER MORE RESEARCH FOUND HAS A SERVICE LETTER ADDRESSING THIS ISSUE. SL 505-36-0003. AFFECTED PRE-COOLER P/N 10965000-105 S/N T0377. TSN: 1183.5 CSN: 761